Giddings & Lewis HSM620 AC Brushless Servo Motor

Technical Specifications

Model： HSM620, Alternate PN: 401-34438-00

Brand： Giddings & Lewis

Product Type: Flange mount permanent magnet brushless synchronous servo motor for CNC feed axis

Module Feature:

Function: HSM series brushless servo motor for G&L PiC900 CNC platform. Driven by Centurion DSM servo amplifiers, delivers high continuous torque for heavy load feed axes of horizontal boring mills and large machining centers.

Feedback: Built-in differential incremental A/B/Z encoder for closed-loop position feedback

Cooling: Natural convection cooling

Shaft option: Keyed shaft, optional 24V holding brake

Built-in component: Winding thermal sensor for overtemperature protection

LED indicators: Encoder status indicator

Hardware self-diagnosis: Encoder signal integrity check, motor winding temperature monitoring

Programming software: PiCPro / DSMPro for motor parameter identification and servo tuning

Electrical Parameters

Rated voltage: 240V three-phase AC

Rated power: 3.4kW

Rated speed: 3000 rpm

Thermal protection: PTC thermal sensor embedded in stator winding

Mechanical & Structure:

Mounting: Flange mounting for machine axis assembly

Weight: 15.2kg

Protection class: IP65

Environmental:

Operating temperature: -10℃ ~ +40℃

Ambient humidity: 5~85% non-condensing

Certification: CE

Status: Manufacturer discontinued legacy HSM series brushless servo motor

System compatibility

Compatibility description: HSM620 belongs to Giddings & Lewis HSM servo motor family. Compatible with DSM series Centurion servo drives, PiC900 MMC motion control boards and PiC900 CNC controller. Widely installed on heavy G&L horizontal boring mills.

Function

Function description: HSM620 is heavy-duty brushless AC servo motor manufactured by Giddings & Lewis. It converts three-phase AC power output from servo amplifier into rotary mechanical power to drive machine feed axes. Integrated incremental encoder sends real-time speed and position feedback to servo drive to realize high precision closed-loop control. The built-in thermal sensor protects the motor against overload overheating. Optional holding brake locks axis position when power is lost. It is legacy heavy load servo motor spare for G&L CNC boring mills.

Installation

Installation steps: Follow lockout/tagout safety procedure before installation. Disconnect servo drive AC power and 24VDC control supply. Mount HSM620 to machine axis via flange and couple shaft. Connect shielded three-phase motor power cable and differential encoder feedback cable. If equipped with brake, wire brake control circuit. Complete motor auto-identification and servo gain tuning via PiCPro or DSMPro. Run self-test and verify axis jog, homing and heavy load positioning performance.

Interface

Interface list: 3-phase motor power connector, encoder feedback connector, thermal sensor and brake wiring port,on-board encoder status LED indicator for Giddings & Lewis HSM620.

Diagnostic

Troubleshooting: Motor no rotation:Check servo enable signal, motor power wiring or damaged encoder cable. Overtemperature alarm:Excessive mechanical load, poor ventilation or faulty thermal sensor. Position inaccuracy:Encoder signal loss, loose shaft coupling or improper servo gain parameters.

Product Brief

Brief description: HSM620 is Giddings & Lewis legacy HSM series brushless AC servo motor,with built-in incremental encoder and thermal protection for heavy CNC boring mill feed axis high torque motion control,discontinued CNC servo motor spare.